Respuesta :

Answer:

The steel industry made possible the expansion of railroads given that the tracks are made of steel. The railroad companies were the biggest customers of the steel industry because thousands of miles of steel track were laid to connect all areas of the United States.

Answer:

Railcars and tracks were made from steel.

Bridges used by railroads were made from steel.

Railroads transported the raw materials needed to make steel.

Railroads transported finished steel goods.

Explanation:

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